TMP93xy20FG Toshiba, TMP93xy20FG Datasheet - Page 17

• Manufacturer Part Number: TMP93xy20FG
• Manufacturer: Toshiba

Specifications of TMP93xy20FG

• Package: LQFP144
• Rom Types(m=mask,p=otp, F=flash,e=eeprom): M/P
• Rom Combinations: 64
• Ram Combinations: 2
• Architecture: 16-bit CISC
• Usb/spi Channels: -
• Uart/sio Channels: 2
• I2c/sio Bus Channels: 1
• (s)dram Controller: -
• Adc 10-bit Channel: 8
• Da Converter: -
• Timer 8-bit Channel: 4
• Timer 16-bit Channel: 4
• Pwm 8-bit Channels: -
• Pwm 16-bit Channels: -
• Cs/wait Controller: -
• Dual Clock: Y
• Number Of I/o Ports: 88
• Power Supply Voltage(v): 4.5 to 5.5

Note 1: Note on using the low frequency oscillation circuit.
Note 2: Accurate adjustment of the oscillation frequency.
3.3.1
(a) Crystal/ceramic
In connecting the low frequency resonator to ports 86 and 87, it is necessary to make the following
settings to reduce the power consumption.
(Connecting with resonators) P8CR<P86C, P87C> = 11, P8<P86:87> = 00
(Connecting with oscillators) P8CR<P86C, P87C> = 11, P8<P86:87> = 10
The CLK pin output at 1/2 the system clock frequency (f
clock. With a system requiring adjustment of the oscillation frequency, an adjusting program must
be written.
resonator
System Clock Controller
internal I/O. It contains two oscillation circuits and a clock gear circuit for high frequency
(fc). The register SYSCR1<SYSCK> changes the system clock to either fc or fs,
SYSCR0<XEN> and SYSCR0<XTEN> control enabling and disabling each oscillator, and
SYSCR1<GEAR2:0> changes the high frequency clock gear to either 1, 2, 4, 8, or 16 (fc, fc/2,
fc/4, fc/8, or fc/16). These functions can reduce the power consumption of the equipment in
which the device is installed.
0, <SYSCK> = 0, and <GEAR2:0> = 100 upon resetting.
oscillator is connected to the X1 and X2 pins.
connecting a resonator to the X1 and X2, XT1 and XT2 pins, respectively. Clock input from
an external oscillator is also possible.
single clock mode, the XT1 and XT2 pins can be used as I/O port pins.
X1
The system clock controller generates the system clock signal (f
The system clock (f
For example, f
The high-frequency (fc) and low-frequency (fs) clock signals can be easily obtained by
The XT1 and XT2 pins can also function as ports 86 and 87. Therefore in the case of
High-frequency clock
X2
Figure 3.3.4 Examples of Resonator Connection
SYS
(b) External oscillator
SYS
X1
is set to 0.625 MHz by resetting in the case where the 20 MHz
) is set to fc/32 (fc/16 × 1/2) by the setting of <XEN> = 1, <XTEN> =
See application
circuit in chapter 5.
93CS20-15
74HCU04
X2
(c) Crystal resonator
XT1
SYS
/2) is used to monitor the oscillation
XT2
Low-frequency clock
SYS
XT1
(b) External oscillator
) for the CPU core and
TMP93CS20
2004-02-10
(open)
XT2